CASE SOLVED:
To reiterate: Objective was to ban all 'Empty' Subject emails (emails with no textual components)
Why?: Because you can eliminate alot of junk/tainted/viri emails by doing so.
To accomplish this task do the following:
1. mkdir -p /etc/e-smith/templates-custom/etc/mail/spamassassin/local.cf
2 cd /etc/e-smith/templates-custom/etc/mail/spamassassin/local.cf
3. pico -w /etc/e-smith/templates-custom/etc/mail/spamassassin/local.cf/20localscores
**add the following to the 20localscores file
header EMPTY_SUBJECT Subject =~ /^\s*$/
score EMPTY_SUBJECT 20.0
4. signal-event email-update
** You can change the rule name (EMPTY_SUBJECT), file name (20localscores), and score (20) to anything you like as these are purely your preference.